I am in awe by what I have just learned. I wear bilateral hearing aids, have never had any lessons in music and, in fact, never sing...I can't. I can barely reproduce the simplest of tunes, and then flatly. This is a completely new concept for me and I sat for several moments, stunned, by what I just heard about God and music. I didn't really understand the overtone series and I missed some words (he speaks fast), but I am thankful for what I did learn from the study of Music. Thank you.